AIMS Environmental Science最新文献_第10页

Trust and commitment in supply chain during digital transformation: A case in Korea 数字化转型中的供应链信任与承诺:以韩国为例

IF 1.4

AIMS Environmental Science Pub Date : 2021-01-01 DOI: 10.3934/environsci.2021040

Ik-Whan G. Kwon, Nina Shin, Sung-Ho Kim, Hamed Usman

引用次数: 0

Management of hospital radioactive liquid waste: treatment proposal for radioimmunoassay wastes 医院放射性液体废物的管理:放射免疫测定废物的处理方案

IF 1.4

AIMS Environmental Science Pub Date : 2021-01-01 DOI: 10.3934/environsci.2021029

M. Sancho, Valencia Spain n, J. M. Arnal, G. Verdú-Martín, Cristina Trull-Hernandis, B. García-Fayos

{"title":"Management of hospital radioactive liquid waste: treatment proposal for radioimmunoassay wastes","authors":"M. Sancho, Valencia Spain n, J. M. Arnal, G. Verdú-Martín, Cristina Trull-Hernandis, B. García-Fayos","doi":"10.3934/environsci.2021029","DOIUrl":"https://doi.org/10.3934/environsci.2021029","url":null,"abstract":"Radioactive liquid wastes are produced at hospitals from diagnostic and therapeutic applications of radionuclides. The most usual management of these wastes is temporary storage at the hospital for radioactivity decay and, then, discharge into sewage if not other pollutants are present in waste, always after authorization of the corresponding institution. In some cases, radioactive wastes have other hazards, such as chemical or biological ones, which can be more dangerous than radiological hazard, and do not allow direct discharge into sewage in spite of decaying activity below the clearance level. Therefore, these wastes have to be treated and condition before discharge in spite of activity decay below discharge limit. This is the case of liquid wastes from radioimmunoassay (RIA), a laboratory technique that allows to determine human substances in very low concentrations (below 10-12 g/mL), like hormones, using 125I as radionuclide. This study summarizes the usual management of radioactive liquid wastes from hospitals, including conventional and recent treatments applied. Furthermore, based on experimental results obtained with real RIA wastes, this work exposes a proposal of treatment with ultrafiltration and reverse osmosis membranes, and determines the most suitable application of this treatment according to radiological and operational considerations.","PeriodicalId":45143,"journal":{"name":"AIMS Environmental Science","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70231022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Management of radioactive waste from application of radioactive materials and small reactors in non-nuclear industries in Canada and the implications for their new application in the future 加拿大在非核工业中应用放射性材料和小型反应堆所产生的放射性废物的管理及其对今后新应用的影响

IF 1.4

AIMS Environmental Science Pub Date : 2021-01-01 DOI: 10.3934/environsci.2021039

George Xu, Nicholas Chan

{"title":"Management of radioactive waste from application of radioactive materials and small reactors in non-nuclear industries in Canada and the implications for their new application in the future","authors":"George Xu, Nicholas Chan","doi":"10.3934/environsci.2021039","DOIUrl":"https://doi.org/10.3934/environsci.2021039","url":null,"abstract":"A large number of artificial-origin radionuclides from irradiation in small reactors and/or nuclear reactions in accelerators are currently used in non-nuclear industries such as education, oil and gas, consumer merchandise, research, and medicine. Radioactive wastes from the use of these radionuclides in non-nuclear industries include expired sealed radioactive sources, biological materials, radionuclide-containing chemicals, contaminated equipment, and very small quantities of used nuclear fuel. Although being less challenging and complex than nuclear energy production and research waste streams, these wastes are subject to the common nuclear regulations by the Canadian Nuclear Safety Commission, and are managed following domestic and international standards and guidelines made by the Canadian Standards Association, International Atomic Energy Agency, and International Organization for Standardization. Management practices used in the nuclear industry in Canada are commonly applied to the non-nuclear industry radioactive waste streams, such as waste handling, treatment, packaging, storage, transportation, clearance and exemptions, and disposal. The half-lives of radionuclides in non‑nuclear applications range from hours to thousands of years, and their activities in non-nuclear industrial applications can be as low as their clearance level or as high as the upper limits for intermediate level radioactive waste. Waste containing only short half-life radionuclides is placed in temporary storage to allow decay, and then is cleared and disposed of through non-radioactive waste routes. Non‑clearable waste materials are treated, consolidated, and managed along with radioactive waste generated from the nuclear industries at designated radioactive waste management sites.","PeriodicalId":45143,"journal":{"name":"AIMS Environmental Science","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70231134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

An efficiency dynamic seasonal regression forecasting technique for high variation of water level in Yom River Basin of Thailand 泰国Yom河流域水位剧烈变化的高效动态季节回归预报技术

IF 1.4

AIMS Environmental Science Pub Date : 2021-01-01 DOI: 10.3934/environsci.2021019

K. Nualtong, R. Chinram, Piyawan Khwanmuang, S. Kirtsaeng, T. Panityakul

引用次数: 0

Prioritization in wildfire restoration using GIS-based ordered weighted averaging (OWA): A case study in southern California 基于gis的有序加权平均(OWA)在野火恢复中的优先排序:以南加州为例

IF 1.4

AIMS Environmental Science Pub Date : 2021-01-01 DOI: 10.3934/environsci.2021031

Tanner Noth, C. Rinner

{"title":"Prioritization in wildfire restoration using GIS-based ordered weighted averaging (OWA): A case study in southern California","authors":"Tanner Noth, C. Rinner","doi":"10.3934/environsci.2021031","DOIUrl":"https://doi.org/10.3934/environsci.2021031","url":null,"abstract":"Wildfires are a prevalent natural disaster that can significantly impact human populations and result in considerable losses. With a changing climate, wildfires in many countries have increased in intensity and frequency, making effective restoration efforts in affected areas crucial. This paper aims to evaluate the efficacy of ordered weighted averaging (OWA), a GIS-based multi-criteria decision analysis technique, in identifying priority areas for wildfire restoration. A case study using the 2009 Station Fire in California is presented, using the restoration criteria of slope, erodibility, proximity to forest cover, and proximity to surface water. By applying both importance and order weights, multiple OWA decision strategies with varying risk levels were examined. Different strategies greatly influence the spatial distribution of land considered high and low priority for wildfire restoration, each with varying levels of trade off. In the OWA decision space, placing full emphasis on the highest (best) values (using the risk-taking OR operator) or the lowest values (using the risk-averse AND operator) resulted in composite priority maps that cannot be recommended for practical use. More nuanced scenarios are achieved with the OWA operators representing a range of compromise decision strategies between these extremes. The OWA technique in GIS can thus help to explore the impact of decision-makers' risk attitudes in a wildfire restoration setting.","PeriodicalId":45143,"journal":{"name":"AIMS Environmental Science","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70231089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Development of a Strategic Framework for Sustainable Supply Chain Management 可持续供应链管理战略框架的发展

IF 1.4

AIMS Environmental Science Pub Date : 2021-01-01 DOI: 10.3934/environsci.2021034

Hsin-Yao Hsu, M. Hwang, Y. Chiu

{"title":"Development of a Strategic Framework for Sustainable Supply Chain Management","authors":"Hsin-Yao Hsu, M. Hwang, Y. Chiu","doi":"10.3934/environsci.2021034","DOIUrl":"https://doi.org/10.3934/environsci.2021034","url":null,"abstract":"It is widely agreed that properly establishing a sustainable supply chain strategy to yield competitive advantages is essential for business enterprises, and a number of research papers on sustainable supply chains have been produced over the last two decades. However, many past studies on sustainable supply chain strategies emphasized either classification schemes or various coordination mechanisms, and few of them have focused on an integrated framework for sustainable supply chains. Therefore, the objective of this study is to develop a strategic framework for the sustainable supply chain management. The study is based on the abductive reasoning process through literature review to establish a strategic framework which is ranked through grey relational analysis (GRA). The weighted data of various strategies collected from the elite interview prove to be comprehensive and evaluable, so it can create values for supply chain members in practice. The results further suggest that each sustainable supply chain in different fields can select the best combination of strategies through GRA to constantly facilitate performance of sustainability. The main contribution is the submission of a strategic framework which makes up the insufficiency of past research papers lacking an integrated strategic framework. At the same time, the proposed strategic framework has also been illustrated through a case study.","PeriodicalId":45143,"journal":{"name":"AIMS Environmental Science","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70230678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Humic acid improved germination rate, seedling growth and antioxidant system of pea (Pisum sativum L. var. Alicia) grown in water polluted with CdCl2 腐植酸提高了CdCl2污染水体中豌豆(Pisum sativum L. var. Alicia)的发芽率、幼苗生长和抗氧化系统

IF 1.4

AIMS Environmental Science Pub Date : 2021-01-01 DOI: 10.3934/environsci.2021023

M. Basahi

{"title":"Humic acid improved germination rate, seedling growth and antioxidant system of pea (Pisum sativum L. var. Alicia) grown in water polluted with CdCl2","authors":"M. Basahi","doi":"10.3934/environsci.2021023","DOIUrl":"https://doi.org/10.3934/environsci.2021023","url":null,"abstract":"Seeds of pea (Pisum sativum L. var. Alicia) were germinated for 5 d by soaking in distilled water or treated with cadmium and/or humic acid (HA). Interaction between humic acid and cadmium was previously discussed. However, the regulation of the humic acid / cadmium interaction during seed germination, the first crucial stage of the plant life cycle, need to be clarified. Seed germination is an important stage of the plant life, which is highly sensitive to surrounding medium changes, since the germinating seed is the first interface of material exchange between plant cycle and environment. Relationships among cadmium stress, HA-treatment, germination rate, and changes in reserve mobilization were studied. Cadmium disrupted the soaking process that was a major event of germination. Moreover, important solutes leakage due to Cd-treatment caused disorder in reserve mobilization from cotyledons to growing embryonic axes. The observed delay in germination rate and seedling growth after Cd-treatment could be explained, partially, by the disturbance in the mobilization of water and nutrients. NADH-and MDA-activities were considered as markers of oxidative stress. they were substantially increased after Cd-treatment compared with controls but decreased in presence of AH. Excessive NADH oxidase activities proved the install of oxidative stress in Cd poisoned seeds. We suggested an antagonist effect of Cd and HA on oxidative stress enzyme activities. Treatment of seeds with Cd and/or AH maintained a high level of guaiacol peroxidase activities during five days. The possible implication of GPOX against Cd toxicity and the improvement of the antioxidant system after AH treatment proved an important implication of these findings during germination.","PeriodicalId":45143,"journal":{"name":"AIMS Environmental Science","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70230843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Development of sustainable waste management in higher education institutions 在高等教育机构发展可持续的废物管理

IF 1.4

AIMS Environmental Science Pub Date : 2021-01-01 DOI: 10.3934/environsci.2021016

Nadia A. Abdulghaffar, I. Williams

{"title":"Development of sustainable waste management in higher education institutions","authors":"Nadia A. Abdulghaffar, I. Williams","doi":"10.3934/environsci.2021016","DOIUrl":"https://doi.org/10.3934/environsci.2021016","url":null,"abstract":"Despite the various initiatives being employed for fostering sustainability to globally achieve Agenda 2030, the understanding of the Higher Education Institutions (HEI) practices, discourse, and management remains limited. The present study identifies and quantifies the development of sustainable practices for HEI. It is an exploratory cross-sectional study conducted in 2014 at King Abdul Aziz University (KAU) to identify knowledge, attitudes, and behaviour concerning waste management and what could be done to develop sustainable practices at the campus. The study population comprised of academic and non-academic staff of KAU recruited through random sampling technique. The data was collected through two closed-ended questionnaires and analyzed using IBM Statistical Package of Social Sciences software (SPSS) version 20. The study's findings showed that waste management (WM) would improve KAU's reputation at local, national and international levels resulting in improved regulatory compliance. The results also reflected that environmental pollution caused by the emissions from the energy used and the materials consumed could considerably be reduced by the effective technical measures taken by the organization. The study concluded that sustainability in universities could be achieved when HEI works to inform citizens; there still is a long way to be at par with the European counterparts.","PeriodicalId":45143,"journal":{"name":"AIMS Environmental Science","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70230650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Modeling the temporal dynamics of chlordecone in the profile of tropical polluted soils as affected by land use change 受土地利用变化影响的热带污染土壤剖面中十氯酮的时间动态模拟

IF 1.4

AIMS Environmental Science Pub Date : 2021-01-01 DOI: 10.3934/environsci.2021020

Jorge Sierra, Antoine Richard

引用次数: 0

The effects of Ganoderma lucidum compound on goat weight and anti-inflammatory: a case study of circular agriculture 复方灵芝对山羊体重和抗炎的影响——以循环农业为例

IF 1.4

AIMS Environmental Science Pub Date : 2021-01-01 DOI: 10.3934/environsci.2021035

Wen-Hung Lin, Kuo-Hua Lee, Liangchuan Chen

引用次数: 0